Apparatus for operating clutch or brake mechanisms



Feb. 17. 1925. 1,527,061

S. MUNSON APPARATUS FOR OPERATING CLUTCH OR BRAKE MECHANISMS Filed sept. 50. 1922 2 Sheets-Sheet 1 INVENTOR.

W [1 3 ATTORNEY.

Feb. 17, 1925. 1,527,061

s. MUNSON APPARATUS FOROPERATING CLUTCH OR BRAKE MECHANISMS Filed Sept. 30, 1922 2 Sheets-Sheet 2 A30 i w o; 1-H] 3 a 3 53 49 o 0 \i INVENTOR.

ZW/axs: 1 By ,mw ATTORNEY.

Patented Feb. 17,1925. v

- UNITED STATES PATENfOFI-ICE.

. SWENEY Manson, or summon,

'nrrnnn'rus m.- ornmrma CLUTCH on. BRAKE mncnamsxs.

lippliotition flied September so, 1922. Serial No. 801,617.

Toall whom it may concern: I Fig. is a vertical sectional view of a", Be it known that I, SWENEY MUNsoN, modified form of my inyention, in which but a citizen of the United States, residing at a single cylinder and piston are employed; Scammon, in the county of Cherokee and Similar reference characters designate 55 5 State of Kansas, have invented a certain new similar parts in the diifereih; views.

and useful Improvement in Apparatus for Referring particularly to Figs. 1 to 3, Operating Clutch or Brake Mechanisms, ofthere is illustrated a portion of a hoisting which the following is a specification. engine of an ordinary type with which my My invention relates to improvements in apparatus is adapted to be usedfle0 apparatus for operating clutch or brake 1 designates an ordinary hoisting drum mechanisms. rotatably mounted on a horizontal rotary It is particularly adapted for use in condriving shaft 2, on which is'keye'd a spur nection with clutch and brake mechanisms gear wheel '3, which meshes with and is of the type in which a friction strap is al driven b a pinion 4:, keyed on a shaft .5, 66 i ranged to clampingly engage the periphery Fig. 1, w 'ch may be rotated by any suitable of a rotary member. means, not shown.

One of the ob]ects of my invention is to A friction clutch is arranged to connect provide novel means by which the clutch or the wheel 3 and drum 1 and comprises the brake may be operated and reliably held in following described parts.

20 the position in which it is set. L designates a friction strap or band, A further object of my invention is to which enclrcles the drum 1 at one end thereof provide novel means by which the apparaand whlch has attached at its inner side I tus may be operated by fluid under pressure. clamping blocks 7 which are adapted to A further object of my invention is the clampingly engage the periphery of the 7. i

provision of novel means by which my im-' drum 1, so as to,serve as a clutch member proved apparatus may be employed in con to drive the drum or to serve as braking nection with hoisting mechanisms now in meansfor holding the drum when the latter use. is ermitted to run free. I,

Still another object of my invention is to no end of the strap or band' 6 is atso so provide an apparatus of the kind described tached b a pin 8 to the wheel 3, Fig. 1, the which "is simple, cheap to make, durable, other en of the band or strap 6 having at strong, not liable to get out of order, which tached to it a member 9- having a hole may be easily operated, and which is efiithrough which extends and in which is loosecient in operation. gtfitted a screw 10, one end of which has 3 of my invention are I The novel features ed. on it a nut 10' bearing on the member hereinafter fully described and claimed. 9. The screw 10 is pivoted by a bolt 11 to, In the accompanying drawings, which a crank712 which is rigidly secured toonc illustrate my invention end of a horizontal oscillatory shaft 13,

, Fig. 1 is a vertical sectional view of the which is rotatably mounted in the wheel 3, preferred form of my invention, on the line and which at its other end is provided with 11 of Fig. 2, showing my" invention apa crank 14, having mounted in it a pin 15, plied to a hoisting apparatus of anordinary to which is pivoted the outer end of a link type, a portion only of which is shown. 16, the inner end of which is pivoted by a Fig. 2 is a side view of the same, shown pin 17 to one arm of a bell crank lever 18,

45 partly in elevation and partly in vertical which is pivoted at its angle-by a pin 19' section. to the wheel 3.

Fig. 3 is a top view of my improved ap- The-other arm of the bell crank lever 18 paratus. extends through slots 20 and 21 provided Fig. 4 is an elevation of the three way respectively in the hub of the wheel 3 and I so valve provided, with, a. foot support on the in the shaft 2. The latter at one end is prova'lve lever, vide'd with an ax al hole 22, which coup municates with the slot 21 and in which is slidably mounted an oscillatory member comprising preferably a reciprocative ope'ratmg bar 23, which is provided with a slot 24 into which the adjacent arm of the lever 18 extends.

When the bar 23 is reciprocated, the bell crank lever 18 will be oscillated, so as to tighten and loosen the strap or band 6 with res ect to the drum 1.

n oscillatory membercomprising referably a reciprocative rack 25 is s idably mounted in a suitable su port 26 and is disposed in longitudinal alinement with the bar 23 which is provided with an annular flange 27 against opposite sides of which bear respectlvel two sets of balls 28 and 29, located in a rousing in which the bar 23 is rotatable, and which has an internally screw threaded end fitted on the adjacent screw threaded end of the rack 25. The.

- balls 28 and 29 bear respectively against the housing 30 and the adjacent end of the rack 25.

An oil or grease cup 31 has a threaded inner end fitted in athreaded hole provided inthe rack 25. The threaded stem 32 of the grease or oil cup is adapted to bere-.

movably mounted in any one of one or more notches 33 provided in the open end of the housing 30, whereby the latter is locked against rotation on the rack 25.

Rotatably mounted in bearings 34 supported by the support 26 is a horizontal shaft 35, disposed parallel with the rack 25,

and having rigidly secured thereto a worm 36, which meshes with the 'teethof the rack 25, and a pinion 37 which meshes with the teeth of a horizontal rack 38, the ends of which are rigidly attached to the inner sides respectively of two pistons 39 and 40 which v are respectively reciprocative in two horizontal cylinders 41 and 42, which are disposed in alinement with each other at opposite sides respectively of the piston 37, and each of which has an open inner end and a closed outer end. i

The cylinders 41 and 42 are mounted on and rigidly secured to the support 26.

A horizontal brace plate 43 is attached to and connects the cylinders and is provided on its under side with a lug 44 against which the upper edge of the rack 38 has a slidingbearing. 4

Manually controlled fluid operated means ma be provided for effecting the reciprocation of the pistons 39 and 40.

For this purpose two conductors 45 and 46 are respectively mounted at one set of ends in holes provided therefor in the closed outer ends of the cylinders 41 and 42.

The other ends of said conductors res ectively connect ,with two passages 47 an 48 provided in a valve casing 49, which is provided intermediate of said passages with an site sides thereof with two 'assages 56 and 57, by which the fluid un er pressure can pass, when the valve is in the proper POSI- tions, alternately through the passages 47 and'48, so as to alternately enter the cylin-.

ders 41 and 42 through the conductors 45 and 46 respectively, for the purpose of a!- ternately reciprocating the pistons 39 and 40 in opposite directions.

By turning the valve 54 to the position shown in Fig. 1, the passage 57 connects the passages 47 and 48 with the exhaust pipe 51, thus permitting both cylinders to discharge, when it is desired to-leave the clutch in any Set position, either free or in the clamping position. I

In the operation of the form of my invention shown in Figs. 1 and 2, the parts being as shown, the clutch being in the release position, to clamp the clutch blocks 7 on the drum, the valve 54 is turned so as to connect the passage 56 with the passage 48, and the passage 57 with the passage 47. The fluid will then pass from the pi e 53 into the cylinder 42 through the cond iictor 46, thus forcing the pistons 39' and 40 and rack 38 to the right, as viewed in Fig. 1, thus turning the pinion 37 and worm 36, so that the latter will force the rack 25 to the right as viewed in Fig. 2, thus through the intermediacy ofthe balls 29 and bar 23 swinging the lever 18, so as to contract the band or strap 6 to the clamping position, whereby if the wheel 3 is standing still, and the drum 1 running free the blocks7 will serve as brake shoes for holding thcdrum from turning. If the wheel 3 is being driven, and the clutch is set as described, the blocks 7 will engage and clamp the drum 1, thereby transmitting to the latter the rotation of the wheel 3.

Torelease the clutch, the valve 54 is turned to connect the pipe 53 and passage 47 through the passage 57. The pressure fluid will then pass through the conductor 45 into the cy inder 41, thus forcing the pistons 39 and 40 to the left, as viewed in Fig. 1, thereby moving the rack 38 so as to turn the pinion 37 and worm 36 in the reverse direction, to that already described, thereby moving the rack 25 and the bar 23 together with the lever 18 to the release positions shown in Fig. 2.

As shown in Fig. 4, the upper end of the lever 55 may have pivoted to it a foot rest 58 by which the operator may swing the valve lever 55 to any desired position,

7 within its range of movement.

' function to the rack 38 and which meshes 'with the pinion 37 corresponding to the pinion already described. The remaining portions of the modified form correspond in structure and in function to corresponding parts shown in Figs. 1 and 2.

In the operation of the modified form, the valve 54 is operated inthe same manner as already described with reference to the other form of iny invention. thereby efiecting reciprocation of the single piston 62 for setting the clutch by means of the rod 63, rack 64 and pinion 37 and parts-connected with the latter, in the manner which has been described.

I do not limit my invention to the struc ture shown and described, as other modifications maybe ,made, within the scope of the appende claims, without departmg from the spirit of my invention.

With the form having two cylinders, no

7 packing is required, such as is required with the use of the single cylinder, shown in Fig. 5. f

What I claim is:

1. In an apparatus of the kind described, the combination'with a reci rocative operating bar, of a rack connecte to and reciprocative therewith, a rotary worm meshing with said rack, a cylinder, a piston reciprocative in said cylinder, means connectingthe piston and worm bywhich the latter is rotated alternately in opposite directions when the piston is reciprocated, and fluid operated means for reciprocating the piston, substan-' tially as set forth.

2. In an apparatus of the kind described,

the combination with a reciprocative operat ing bar, ofa rack connecte to and reciprocative therewith, a rotary worm meshlng wlth said rack, a cylinder, a piston rec1procativein said cylinder, a pinion connected to and rotative with said worm, a second rack meshing with said pinion and connected to and reciprocative with said piston, and fluid operated means for reciproeating said piston, substantially as set forth.

3. In an apparatus of the kind described, the combination with a reci rocative operating bar, of a rack connecte to and reciprocative therewith, a rotary worm meshing with said rack, a cylinder having an open end anda plo sed end, a iston reciprocative 111 said cylinder, a secon rackconnected to and reciprocative with said piston and located in and projecting, from the open end ofsaid cylinder, a pinion connectedto and rotative with said wormand meshing with said second rack, and fluid operated means connected v ith the closed end of said'cylinder and with said second rack for reciprocating the latter and said piston, substantially as set forth.

4. In an apparatus of the kind described,

the combination with ,a reciprocative opcrating bar, of a rack connected to and reciprocativetherewith, a rotary worm meshing ith said rack, two cylinders having open inner ends and closed outer ends, two plstons respectively reciprocative in said cylinders, a second rack connecting said pistons, a pinion rotative'with and connected to said worm and meshing with saidsecond rack,-andfluid operated means respectively connected with the closed ends of said cylinders for reciprocating said pistons, substan- Y tially as set forth.

5. In an apparatus of the kind described, the combination with a reciprocative operating member, of a rack connected to and re ciprocative therewith, a rotary worm meshing' with said rack, two cylinders having open inner ends and closed outer ends, two

plstons respectively reciprocative in'said c'ylinders, a connecting member connecting said pistons, means connected to and actuated y said connecting member by which the worm is rotated alternately in opposite directions when the pistons arereclprocated, and fluid operated means connected to the closed ends of said cylinders by which the pisillns are reciprocated, substantially as set 6. In an a paratus of the hind described,

the combination with a rotary shaft, a drum rotatable thereon, a driving wheel secured to and'rotatable with the shaft, and clutch mechanism arranged to connect the drum and driving wheel'and including a bar axially longitudinally reciprocativ'e in said shaft, of a rack connected to. and reciprocative with said bar, a. rotary worm meshing with said rack, a cylinder, a piston recipr'ocative in said cylinder,-means connecting the piston and worm by which the latter is rotated alternately in opposite directions when the piston is reoiproeated, and fluid operated means for reciprocating said piston, substantially as set forth.

7. In an apparatus of the kind described. the combination with a rotatable shaft, a drum rotatable thereon, a driving wheel secured to and rotatable with the shaft, and clutch mechanism arranged to connect the drum and driving wheel'and including a bar axially longitudinally reciprocative in said tive with said bar, a rotary worm meshing with said rack, a cylinder, a piston reciprocative in said cylinder, a second rack connected to and reciprocative with said piston a pinion meshin with said second rack an connected to an rotative ,with said worm, and fluid operated means for reciprocating said piston, substantially as set forth. I

8. In an apparatus of the kind described, the combination with a rotary member, a friction band embracing and adapted to clamp the periphery of said rotary member, and means including a reciprocative operating bar forvtightening and loosenin said band on said rotary member, when t ereciprocative bar is reciprocated, of a rack connected to said reciprocative bar and reciprocative therewith, a rotary worm meshing with said rack, a cylinder, a piston reciprocative in said cylinder, means connecting the piston and worm by which the latter is rotated alternately in opposite directions when the piston is reciprocated, and fluid operated means forreci rocating said piston, substantially as set i drth.

9. In an apparatus of the kind described, the combination with a rotary member, a friction band arranged to releasably clampingly engage said member, and means including a re'ciprocative operating bar for tightening and loosening said band on said member, when the bar is reciprocated, of a rack connected to and reci rocating with said bar, a rotary worm mes ing with said rack, a cylinder, apiston reciprocative in said cylinder, a pinion connected to and rotative with'said worm, a second rack meshing with said pinion and connected to and reciprocative with said piston, and fluid operated means for reciprocating said piston, substantially as set forth.

10. In an apparatus of the kind described, the combination with a clutch which includes a reciprocative operating member, of a rack connected to and reciprocative with said member, a rotary worm meshing with said rack, a cylinder, a piston reciprocative in said cylinder, means connecting the pistory toothed member, means actuated by the toothed member for operating said clutch, a

worm meshing with said toothed member, a cylinder, a piston reci rocative in said cylinder, means actuated y the piston for rotating the worm alternately in opposite directions'whenthe piston is reciprocated, and fluid actuated means for reciprocating the piston, substantially as set forth.

' 12. In an apparatus of the kind described, the combination with a clutch of an oscillatory toothed member, means actuated by said member for operating said clutch, a worm meshing with said toothed member, a cylinder, a piston reciprocative in said cylinder, apimon connected with and rotatable with said worm, a second oscillatory toothed member meshing with said pinion, and fluid actuated means for reci rocating said piston, substantially as set orth.

13. In an apparatus of the kind described, the combination with a clutch, of an oscil latory toothed member, means connecting the toothed member with the clutch by which the latter is moved to and from the clamping position when said member is oscillated, a worm meshing with said toothed member, two cylinders each having an open inner end and a closed outer end, two pistons respectively reciprocative in said cylinders, a rack connecting said pistons, a pinion meshing with said rack and connected to and rotative with said worm, and means by which fluid under pressure may be admitted alternately in said cylinders through the closed ends thereof and exhausted therefrom,,substantially as set forth.

In testimony whereof I have signed my name to this specification.

SWENEY MUNSOX. 

